/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:00:05,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:00:05,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:00:05,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:00:05,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:00:05,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:00:05,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:00:05,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:00:05,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:00:05,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:00:05,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:00:05,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:00:05,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:00:05,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:00:05,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:00:05,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:00:05,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:00:05,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:00:05,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:00:05,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:00:05,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:00:05,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:00:05,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:00:05,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:00:05,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:00:05,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:00:05,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:00:05,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:00:05,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:00:05,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:00:05,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:00:05,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:00:05,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:00:05,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:00:05,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:00:05,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:00:05,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:00:05,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:00:05,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:00:05,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:00:05,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:00:05,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:00:05,606 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:00:05,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:00:05,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:00:05,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:00:05,609 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:00:05,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:00:05,610 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:00:05,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:00:05,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:00:05,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:00:05,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:00:05,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:00:05,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:00:05,613 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:00:05,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:00:05,613 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:00:05,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:00:05,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:00:05,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:00:05,614 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:00:05,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:00:05,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:00:05,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:00:05,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:00:05,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:00:05,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:00:05,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:00:05,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:00:05,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:00:05,615 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:00:06,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:00:06,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:00:06,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:00:06,153 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:00:06,153 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:00:06,155 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-09-25 09:00:06,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0bee46976/d204a49348804ce7948f902d893cf987/FLAG960d58d79 [2020-09-25 09:00:06,889 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:00:06,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-09-25 09:00:06,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0bee46976/d204a49348804ce7948f902d893cf987/FLAG960d58d79 [2020-09-25 09:00:07,158 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0bee46976/d204a49348804ce7948f902d893cf987 [2020-09-25 09:00:07,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:00:07,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:00:07,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:07,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:00:07,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:00:07,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:07" (1/1) ... [2020-09-25 09:00:07,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd8ad23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:07, skipping insertion in model container [2020-09-25 09:00:07,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:07" (1/1) ... [2020-09-25 09:00:07,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:00:07,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:00:07,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:07,845 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:00:07,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:07,995 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:00:07,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:07 WrapperNode [2020-09-25 09:00:07,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:07,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:00:07,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:00:07,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:00:08,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:07" (1/1) ... [2020-09-25 09:00:08,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:07" (1/1) ... [2020-09-25 09:00:08,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:07" (1/1) ... [2020-09-25 09:00:08,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:07" (1/1) ... [2020-09-25 09:00:08,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:07" (1/1) ... [2020-09-25 09:00:08,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:07" (1/1) ... [2020-09-25 09:00:08,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:07" (1/1) ... [2020-09-25 09:00:08,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:00:08,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:00:08,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:00:08,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:00:08,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:00:08,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:00:08,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:00:08,202 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:00:08,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:00:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:00:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:00:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:00:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:00:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:00:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:00:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:00:09,638 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:00:09,639 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:00:09,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:09 BoogieIcfgContainer [2020-09-25 09:00:09,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:00:09,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:00:09,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:00:09,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:00:09,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:00:07" (1/3) ... [2020-09-25 09:00:09,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35dbeaff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:09, skipping insertion in model container [2020-09-25 09:00:09,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:07" (2/3) ... [2020-09-25 09:00:09,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35dbeaff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:09, skipping insertion in model container [2020-09-25 09:00:09,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:09" (3/3) ... [2020-09-25 09:00:09,659 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label13.c [2020-09-25 09:00:09,671 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:00:09,683 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:00:09,708 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:00:09,744 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:00:09,745 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:00:09,745 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:00:09,745 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:00:09,745 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:00:09,746 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:00:09,746 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:00:09,746 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:00:09,780 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:00:09,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 09:00:09,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:09,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:09,807 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:09,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:09,815 INFO L82 PathProgramCache]: Analyzing trace with hash -946278635, now seen corresponding path program 1 times [2020-09-25 09:00:09,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:09,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294783015] [2020-09-25 09:00:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:10,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:10,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:10,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:11,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:12,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:12,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:15,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:15,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 09:00:15,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:00:15,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 09:00:15,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:15,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:00:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 09:00:15,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:00:15,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:15,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:15,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:15,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:15,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:15,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 09:00:15,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:15,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:00:15,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:00:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:15,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294783015] [2020-09-25 09:00:15,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:15,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:00:15,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036891332] [2020-09-25 09:00:15,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:00:15,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:15,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:00:15,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:00:15,585 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:00:17,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:17,944 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 09:00:17,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:00:17,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-09-25 09:00:17,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:17,992 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 09:00:17,993 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 09:00:18,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:00:18,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 09:00:18,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 09:00:18,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 09:00:18,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 09:00:18,125 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 151 [2020-09-25 09:00:18,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:18,126 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 09:00:18,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:00:18,127 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 09:00:18,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 09:00:18,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:18,140 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:18,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:00:18,141 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:18,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:18,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1054538660, now seen corresponding path program 1 times [2020-09-25 09:00:18,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:18,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008680012] [2020-09-25 09:00:18,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:18,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:18,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:18,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:21,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:21,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:23,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:23,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 09:00:23,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:00:23,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 09:00:23,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:23,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:23,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:23,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 09:00:23,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 09:00:23,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:00:23,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:23,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:23,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:23,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:23,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:23,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:00:23,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:23,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:23,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:23,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:23,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:00:23,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:00:23,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:23,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:23,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:23,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:23,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:23,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 09:00:23,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:23,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:23,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:23,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:00:23,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:23,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008680012] [2020-09-25 09:00:23,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:23,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:00:23,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355732348] [2020-09-25 09:00:23,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:00:23,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:23,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:00:23,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:00:23,517 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 8 states. [2020-09-25 09:00:26,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:26,174 INFO L93 Difference]: Finished difference Result 1723 states and 2114 transitions. [2020-09-25 09:00:26,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:00:26,174 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 172 [2020-09-25 09:00:26,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:26,183 INFO L225 Difference]: With dead ends: 1723 [2020-09-25 09:00:26,183 INFO L226 Difference]: Without dead ends: 1083 [2020-09-25 09:00:26,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:00:26,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-09-25 09:00:26,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 952. [2020-09-25 09:00:26,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2020-09-25 09:00:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1181 transitions. [2020-09-25 09:00:26,301 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1181 transitions. Word has length 172 [2020-09-25 09:00:26,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:26,303 INFO L479 AbstractCegarLoop]: Abstraction has 952 states and 1181 transitions. [2020-09-25 09:00:26,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:00:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1181 transitions. [2020-09-25 09:00:26,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 09:00:26,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:26,312 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:26,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:00:26,312 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:26,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:26,315 INFO L82 PathProgramCache]: Analyzing trace with hash 657710585, now seen corresponding path program 1 times [2020-09-25 09:00:26,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:26,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763834500] [2020-09-25 09:00:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:26,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:26,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:26,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:26,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:27,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:27,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:29,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:31,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 09:00:31,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:00:31,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 09:00:31,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:31,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:31,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 09:00:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 09:00:31,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:00:31,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:31,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:31,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:31,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:31,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:00:31,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:31,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:31,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:31,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:31,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:31,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:31,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:31,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:31,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 09:00:31,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:31,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:31,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:31,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:00:31,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:31,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:00:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:31,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:31,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:00:31,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:31,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 09:00:31,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:31,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:31,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:31,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:31,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:00:31,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:31,980 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:00:31,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763834500] [2020-09-25 09:00:31,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:31,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:00:31,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403314402] [2020-09-25 09:00:31,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:00:31,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:31,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:00:31,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:00:31,984 INFO L87 Difference]: Start difference. First operand 952 states and 1181 transitions. Second operand 7 states. [2020-09-25 09:00:34,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:34,790 INFO L93 Difference]: Finished difference Result 2262 states and 2933 transitions. [2020-09-25 09:00:34,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:00:34,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-09-25 09:00:34,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:34,804 INFO L225 Difference]: With dead ends: 2262 [2020-09-25 09:00:34,804 INFO L226 Difference]: Without dead ends: 1334 [2020-09-25 09:00:34,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:00:34,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-09-25 09:00:34,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1258. [2020-09-25 09:00:34,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1258 states. [2020-09-25 09:00:34,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1554 transitions. [2020-09-25 09:00:34,890 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1554 transitions. Word has length 201 [2020-09-25 09:00:34,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:34,890 INFO L479 AbstractCegarLoop]: Abstraction has 1258 states and 1554 transitions. [2020-09-25 09:00:34,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:00:34,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1554 transitions. [2020-09-25 09:00:34,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 09:00:34,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:34,903 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:34,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:00:34,904 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:34,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:34,904 INFO L82 PathProgramCache]: Analyzing trace with hash 38975682, now seen corresponding path program 1 times [2020-09-25 09:00:34,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:34,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423590146] [2020-09-25 09:00:34,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:34,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:35,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:35,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:35,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:36,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:36,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:36,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:39,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:39,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 09:00:39,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:00:39,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 09:00:39,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:39,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 09:00:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 09:00:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:40,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:40,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:40,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:40,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:40,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:40,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:00:40,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:40,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:40,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:40,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:40,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:40,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:40,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:40,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:40,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:40,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:00:40,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:40,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:00:40,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:40,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:00:40,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:40,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 09:00:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:40,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:40,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:40,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:00:40,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:40,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 09:00:40,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:40,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:00:40,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:00:40,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423590146] [2020-09-25 09:00:40,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:40,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:00:40,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722380056] [2020-09-25 09:00:40,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:00:40,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:40,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:00:40,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:00:40,375 INFO L87 Difference]: Start difference. First operand 1258 states and 1554 transitions. Second operand 7 states. [2020-09-25 09:00:43,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:43,624 INFO L93 Difference]: Finished difference Result 2419 states and 3048 transitions. [2020-09-25 09:00:43,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:00:43,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-09-25 09:00:43,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:43,635 INFO L225 Difference]: With dead ends: 2419 [2020-09-25 09:00:43,635 INFO L226 Difference]: Without dead ends: 1169 [2020-09-25 09:00:43,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:00:43,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2020-09-25 09:00:43,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1086. [2020-09-25 09:00:43,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1086 states. [2020-09-25 09:00:43,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1281 transitions. [2020-09-25 09:00:43,686 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1281 transitions. Word has length 206 [2020-09-25 09:00:43,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:43,687 INFO L479 AbstractCegarLoop]: Abstraction has 1086 states and 1281 transitions. [2020-09-25 09:00:43,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:00:43,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1281 transitions. [2020-09-25 09:00:43,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 09:00:43,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:43,693 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:43,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:00:43,694 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:43,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:43,694 INFO L82 PathProgramCache]: Analyzing trace with hash -495080653, now seen corresponding path program 1 times [2020-09-25 09:00:43,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:43,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311116861] [2020-09-25 09:00:43,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:43,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:43,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:43,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:44,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:45,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:45,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:47,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:48,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:48,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 09:00:48,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:00:48,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 09:00:48,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:48,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:48,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:48,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 09:00:48,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 09:00:48,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:48,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:48,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:48,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:48,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:48,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:48,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:00:48,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:48,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:48,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:48,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:48,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:48,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:00:48,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:48,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:48,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:48,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:00:48,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:48,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:00:48,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:48,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:00:48,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:48,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 09:00:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:48,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:49,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:49,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 09:00:49,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:49,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 09:00:49,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:49,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:49,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:49,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:49,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:00:49,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:49,127 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:00:49,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311116861] [2020-09-25 09:00:49,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:49,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:00:49,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041711760] [2020-09-25 09:00:49,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:00:49,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:49,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:00:49,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:00:49,130 INFO L87 Difference]: Start difference. First operand 1086 states and 1281 transitions. Second operand 7 states. [2020-09-25 09:00:51,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:51,208 INFO L93 Difference]: Finished difference Result 2129 states and 2508 transitions. [2020-09-25 09:00:51,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:00:51,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-09-25 09:00:51,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:51,218 INFO L225 Difference]: With dead ends: 2129 [2020-09-25 09:00:51,218 INFO L226 Difference]: Without dead ends: 1260 [2020-09-25 09:00:51,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:00:51,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2020-09-25 09:00:51,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1237. [2020-09-25 09:00:51,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1237 states. [2020-09-25 09:00:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1448 transitions. [2020-09-25 09:00:51,255 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1448 transitions. Word has length 210 [2020-09-25 09:00:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:51,255 INFO L479 AbstractCegarLoop]: Abstraction has 1237 states and 1448 transitions. [2020-09-25 09:00:51,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:00:51,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1448 transitions. [2020-09-25 09:00:51,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 09:00:51,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:51,262 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:51,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:00:51,262 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:51,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:51,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1959609365, now seen corresponding path program 1 times [2020-09-25 09:00:51,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:51,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893409604] [2020-09-25 09:00:51,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:51,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:51,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:51,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:52,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:52,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:54,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking...